AS33071 — ISC-F-AS

AS33071 announces 1 IPv4 prefixes covering 256 addresses and 1 IPv6 prefixes.

About this network

The AS handle ISC-F-AS is held by Internet Systems Consortium, Inc.

What it's used for

• The space carries infrastructure for the Internet Systems Consortium, evidenced by the netname ISC-NET6 and the reverse DNS entry guest.ord1.isc.org.
• The AS announces 256 IPv4 addresses and 1 IPv6 prefix, with 11 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access network.

Notable

• The registrant for the announced prefix 199.6.0.0/24 is Internet Systems Consortium, Inc., which matches the AS holder.
• The address inventory consists of a single /24 block and a single /48 IPv6 prefix, representing a compact and finely subdivided internal network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 199.6.0.0/24
• 2001:500:71::/48

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS11164 Internet2
• AS24482 SG.GS

Downstream networks

• AS24406 China Internet Network Infomation Center
• AS3557 Internet Systems Consortium, Inc.

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS24406 China Internet Network Infomation Center
• AS1299 Arelion Sweden AB
• AS3557 Internet Systems Consortium, Inc.
• AS11164 Internet2
• AS24482 SG.GS
• AS6453 TATA COMMUNICATIONS (AMERICA) INC

Internet exchanges

• Equinix Internet Exchange Chicago — Chicago, United States